I have some general ideas that I think could be useful. "Do you need to vent? Be sure to visit the Anger Management Board!" Some other ideas include, "Don't be one with the crowd. Be yourself and be unique!", "Are you stuck on homework? Visit The Help Desk!", and, "Make a friend today!" I know these ideas are rather rubbish and probably cliché, but they're all some ideas you can take into consideration. Some life advice would be great too, just to enhance people's wisdom or help them in some way. You could also post actual news in the corner as well. You could even put some friendly things in the news section just to welcome people back on the site such as, "Good morning!"

also maybe "Feel free to talk to any mods if you have an issue they could resolve" or something along those lines or "Don't bottle up your feelings. There is always someone you can talk to." would be nice